Here is the full list of all 28 Organ Trail: Director's Cut achievements.
Always choose to shoot your way through zombie hoardes.
Successfully forde a horde of zombies 3 times.
Scavenge more than double the supplies you can carry.
Kill all the other members of your party while they are healthy.
Become a zombie.
Put down an infected party member who has passed out.
The station wagon breaks down 4 times during the trip.
Get attacked by zombies 20 times during scavenging.
Kill 25 zombies without missing a shot.
Find your own grave.
Kill "Ryan" at the start of a game.
Don't pull the trigger
Stop at 50 tombstones.
Kill 500 zombies
Beat the game on hard.
Make it to Safe Haven with George Romero in your party.
[Secret] sacrifices himself for the greater good.
Fully upgrade your station wagon.
Survive all 3 boss encounters.
Investigate 30 points of interest.
Use 50 medkits
Someone died of dysentery.
Have $1000 on you.
Your party dead, you made it to Safe Heaven alone.
Beat the game without trading anything on the road.
Make it to Safe Heaven without starting with any money or selling anything.
Make it to Safe Heaven without starting with any food or buying any food.
Beat the game five times.